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Thirty percent of a radioactive substance decays in four years. By what percent does the substance decay each year?

Thirty percent of a radioactive substance decays in four years. By what percent does the substance decay each year?
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Thirty percent of a radioactive substance decays in four years.

By what percent does the substance decay each year?

User Maroux
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1 Answer

4 votes

Answer:

The substance decays by 7.5% every year

Explanation:

User Prady
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